jumpserver/apps/common/utils/random.py

66 lines
1.8 KiB
Python

# -*- coding: utf-8 -*-
#
import random
import secrets
import socket
import string
import struct
string_punctuation = '!#$%&()*+,-.:;<=>?@[]^_~'
def random_datetime(date_start, date_end):
random_delta = (date_end - date_start) * random.random()
return date_start + random_delta
def random_ip():
return socket.inet_ntoa(struct.pack('>I', random.randint(1, 0xffffffff)))
def random_replace_char(s, chars, length):
using_index = set()
seq = list(s)
while length > 0:
index = secrets.randbelow(len(seq) - 1)
if index in using_index or index == 0:
continue
seq[index] = secrets.choice(chars)
using_index.add(index)
length -= 1
return ''.join(seq)
def remove_exclude_char(s, exclude_chars):
for i in exclude_chars:
s = s.replace(i, '')
return s
def random_string(
length: int, lower=True, upper=True, digit=True,
special_char=False, exclude_chars='', symbols=string_punctuation
):
if not any([lower, upper, digit]):
raise ValueError('At least one of `lower`, `upper`, `digit` must be `True`')
if length < 4:
raise ValueError('The length of the string must be greater than 3')
chars_map = (
(lower, string.ascii_lowercase),
(upper, string.ascii_uppercase),
(digit, string.digits),
)
chars = ''.join([i[1] for i in chars_map if i[0]])
chars = remove_exclude_char(chars, exclude_chars)
texts = list(secrets.choice(chars) for __ in range(length))
texts = ''.join(texts)
# 控制一下特殊字符的数量, 别随机出来太多
if special_char:
symbols = remove_exclude_char(symbols, exclude_chars)
symbol_num = length // 16 + 1
texts = random_replace_char(texts, symbols, symbol_num)
return texts